Can you update the infotainment system in a '15 to the new designed 17,18 look?

 

This has crossed my mind too, and I wanted the new infotainment, but it wouldn't be as simple as a software update. You'd need to change out the hardware and the wiring may not even be the same.

 

The interface of the 2018 is not necessarily better - it's way outdated and counter-intuitive. As if the person who designed it never actually used it. Lots of missing controls, to properly navigate XM channels and even a USB-drive. The text-based interface in the base TSX was way more intuitive.